Jesus' atoning work is sufficient because it fulfills God's justice and provides believers with complete assurance of salvation.
The sufficiency of Jesus' atoning work is affirmed by the completed nature of His sacrifice, which satisfies God's justice and offers peace to believers. The author emphasizes that turning to anything other than Jesus for assurance is an affront to the sacrifice He made. Believers are encouraged to realize that His blood, righteousness, and love provide all they need for acceptance before God. Thus, looking to Jesus entirely—not to self or other sources—ensures that believers can experience full salvation and comfort in their relationship with God.
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